A tourist plays on the swing near the glass-bottomed bridge during the holiday for the National Day and the Mid-Autumn Festival at a valley in Qian'an City, north China's Hebei Province, Oct. 4, 2017. This year's Mid-Autumn Festival falls on Oct. 4. Mid-Autumn Festival, the 15th day of the eighth month on China's lunar calendar, is an occasion for family gatherings and well-known as the time to eat mooncakes. (Xinhua/Yang Shirao)

Citizens read books at a library during the holiday for the National Day and the Mid-Autumn Festival at Taiyuan, north China's Shanxi Province, Oct. 4, 2017. This year's Mid-Autumn Festival falls on Oct. 4. Mid-Autumn Festival, the 15th day of the eighth month on China's lunar calendar, is an occasion for family gatherings and well-known as the time to eat mooncakes. (Xinhua/Cao Yang)

Tourists walk on the glass-bottomed bridge during the holiday for the National Day and the Mid-Autumn Festival at a valley in Qian'an City, north China's Hebei Province, Oct. 4, 2017. This year's Mid-Autumn Festival falls on Oct. 4. Mid-Autumn Festival, the 15th day of the eighth month on China's lunar calendar, is an occasion for family gatherings and well-known as the time to eat mooncakes. (Xinhua/Yang Shirao)

Tourists choose handicrafts during the holiday for the National Day and the Mid-Autumn Festival at Yu Garden, east China's Shanghai, Oct. 4, 2017. This year's Mid-Autumn Festival falls on Oct. 4. Mid-Autumn Festival, the 15th day of the eighth month on China's lunar calendar, is an occasion for family gatherings and well-known as the time to eat mooncakes. (Xinhua/Fang Zhe)

A drama actor interacts with a child at Li Hongzhang's former residence during the holiday for the National Day and the Mid-Autumn Festival at Hefei, capital of east China's Anhui Province, Oct. 4, 2017. This year's Mid-Autumn Festival falls on Oct. 4. Mid-Autumn Festival, the 15th day of the eighth month on China's lunar calendar, is an occasion for family gatherings and well-known as the time to eat mooncakes. (Xinhua/Liu Junxi)

Citizens read books at a library during the holiday for the National Day and the Mid-Autumn Festival in Taiyuan, north China's Shanxi Province, Oct. 4, 2017. This year's Mid-Autumn Festival falls on Oct. 4. Mid-Autumn Festival, the 15th day of the eighth month on China's lunar calendar, is an occasion for family gatherings and well-known as the time to eat mooncakes. (Xinhua/Cao Yang)

Actors perform at Li Hongzhang's former residence during the holiday for the National Day and the Mid-Autumn Festival at Hefei, capital of east China's Anhui Province, Oct. 4, 2017. This year's Mid-Autumn Festival falls on Oct. 4. Mid-Autumn Festival, the 15th day of the eighth month on China's lunar calendar, is an occasion for family gatherings and well-known as the time to eat mooncakes. (Xinhua/Liu Junxi)